Dictionary

meridiem en · NOUN

Etymology

Back-formation from the phrases ante meridiem and post meridiem (more commonly a.m. and p.m.), from Latin merīdiem, accusative of merīdiēs (“midday, noon”).

Meanings

1. (rare, uncountable) Midday, noon.
   • The same female number 1 introduced inside the ice-box at 9 a.m., to 9:15 was in lethargy, pick up and put it inside the stove to 350 degrees, to 12 meridiem, was in excellent conditions. 1983, David R. Iriarte, Scientific Works, →ISBN, page 15:
   • I wrote that the habit of schedulers in the railroad business of skipping the meridiem (they go from 11:59 a.m. to 12:01 p.m. in a split second) “. . . begs the question of what to designate the mass transit of the meridiem.” 1986–8, William Safire, Coming to Terms, Doubleday, published 1991, page 26:
   • From prior to first light to the meridiem – yes, that means noon – the activities around Leelanau are as varied as the people who call it home: 2022 June 20, Ross Boissoneau, “It’s A Good Morning In The County”, in The Ticker:
   • Quantities and frequencies are distributed as follows (neglecting the meridiem hour):[…] 1919, J. R. Sutton, “A Lunar Period in the Rates of Evaporation and Rainfall?”, in Transactions of the Royal Society of South Africa, volumes VII (1918–19), Cape Town: the Society, page 108:
   • But when the sky had brightened for the meridiem—the two to three hours of dull yet hazardous sunlight that filtered through the thick cloud cover each planetary rotation—she’d had to retire underground, losing time. 2011, Guillermo Del Toro, Chuck Hogan, The Night Eternal (book III of The Strain Trilogy), William Morrow, →ISBN, page 14:
2. (countable) The property of a timestamp of being either a.m. or p.m.
   • Ensure the meridiem (AM/PM) specification is set accordingly. 2015, “IP Environment Setup”, in STB-3000: HD Commercial Interface Set-top Box: Commercial Mode Setup Guide, LG Electronics U.S.A., Inc., section “Pro:Centric Setup”, page 56:
   • If a 12-hour clock is specified, the eighth field (the meridiem indicator) is required.[…]If this input string is entered, the parse still recognizes “feb” as the month name and “am” as the meridiem indicator, even though the format string specified both of these fields as uppercase, and the month name as unabbreviated. 1994 March, “System Time Operations”, in OpenVMS Programming Concepts Manual, Maynard, Mass.: Digital Equipment Corporation, section 6 (Date/Time Formatting Routines), subsection 2 (Selecting a Format), subsubsection 3 (Specifying Input Formats at Run Time), pages 5–25:
   • if (hour < 12) { meridiem = 'am'; } else { meridiem = 'pm'; } 2008 July, David Sawyer McFarland, “Working with Words, Numbers, and Dates”, in JavaScript: The Missing Manual, Pogue Press, →ISBN, part one (Getting Started with JavaScript), chapter section “Dates and Times”, subsection “Getting the Time”, page 143:
   • The meridiem for a DateTime can be accessed by the "a" format token: DateTime.local().setZone(z).toFormat("a") //=> "PM" The Luxon Info methods are for finding out what the meridiems are called in different human languages. 2021 June 24, snickersnack, “How to get the actual meridiems in luxonjs?^([sic])”, in Stack Overflow, archived from the original on 05 Dec 2024:
   • The terminal responds N HH MM CR where N, HH, and MM are the meridiem, hour, and minutes, as above. 1986 March, “Operation”, in Ampex 230 plus: Video Display Terminal: Operation Manual, section 10 (Setting the Time), page 3-42:
   • The digital clock has four parts: hour, minute, second, and meridiem.[…]Assigning the Current Meridiem (AM/PM) / Since the Digital Clock is in a 12-hour format, you need to assign the appropriate meridiem according to the current hour. 2021 June 27, Yuvraj Chandra, “How to Create a Digital Clock Using HTML, CSS, and JavaScript”, in MUO:
   • To the right of the radio buttons, complete the Start Time and End Time fields and select the meridiem from the AM/PM menu to define the time during which the schedule is in effect. 2014 December, “Customize Firewall Protection”, in ProSAFE Dual WAN Gigabit SSL VPN Firewall: Model FVS336Gv3: Reference Manual, Netgear, section “Manage Firewall Objects”, subsection “Define a Schedule”, page 295:
   • Finally, we’ll write the method to render the appointment slot radio buttons. To do this we first have to filter the slots by availabity and by whether AM or PM is selected. Both are simple checks; for the first we see if it exists in state.schedule, for the later, we check the meridiem part with moment().format('a'). 2020 March 13, Tony Spiro, “Build an Appointment Scheduler Using React, Twilio and Cosmic JS”, in HackerNoon:

Forms

Relateds

meridian